LLVM error: Stored value type does not match pointer operand type!

[elinorbgr]

This sample code:

#![feature(unboxed_closures)]
#[allow(unused_variables)]

fn main() {
    let a = Some(5u);
    let b = box move || { println!("{}", a); };
}

produces this output:

Stored value type does not match pointer operand type!
  store %"enum.core::option::Option<[uint]>[#3]" %6, %"enum.core::option::Option<[uint]>[#3]"** %7
 %"enum.core::option::Option<[uint]>[#3]"*LLVM ERROR: Broken function found, compilation aborted!

On rustc 5263600.

[elinorbgr]

I got a shorter code:

#![feature(unboxed_closures)]
#[allow(unused_variables)]

fn main() {
    let a = 5u;
    let b = move || { a };
}

which on my computer gives

“rustc llvm.rs ” terminated by signal SIGILL (Illegal instruction)

and on the playpen

rustc: /build/rust-git/src/rust/src/llvm/include/llvm/Support/Casting.h:237: typename llvm::cast_retty<X, Y*>::ret_type llvm::cast(Y*) [with X = llvm::PointerType; Y = llvm::Type; typename llvm::cast_retty<X, Y*>::ret_type = llvm::PointerType*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.

I wonder if it's related to #19575 : both includes move || closures, while this case doesn't require -g flag, and I discovered this one while trying to make a minimal example of what appears to be #19575.

[dotdash]

This no longer fails for me with rustc 1.0.0-dev (48aeaba93 2015-02-28) (built 2015-02-28).